Brand new Husqvarna 521897810 large Pro Forest protective arborist pants. Genuine Husqvarna part number 521897810 fits specific Husqvarna models that require this part number. Also, will fit other Husqvarna-produced brands that require this part number (AYP Craftsman Jonsered McCulloch Poulan Pro RedMax Sears Weed Eater). Please make sure to order for your model/spec/serial not by looks or guessing. Genuine OEM Husqvarna part.